Perhaps you should try some spelling variations:
"thuat trinh java slippers" » "thuat tinh java slippers", "thuyet trinh java slippers", "thuat trong java slippers", "thuat trinh java slippery", "thuat trinh java grippers"
"ngu java java snippets" » "ngu va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("thuat trinh java slippers") or ("ngu java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuat trinh java slippers") OR ("ngu java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuat trinh java slippers ) or ( ngu java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuat trinh java slippers") or ("ngu java java snippets"))) or ("locating bug code snippets"))*.